Date after 10 years

using System;

class DateAfterTenYears
{
    static void Main()
    {
        Console.Write("Add birth date (dd.mm.yyyy)");
        string birthDay = Console.ReadLine();
        //-------------------------------------------------------------
        //Get year from birthday
        string getYear = birthDay.Substring(6);
        int convYear = int.Parse(getYear);
        //-------------------------------------------------------------
        //Get time now
        DateTime Today=DateTime.Today;
        //Get year (now)
        string strYear = Convert.ToString(Today);
        string container1 = strYear.Substring(strYear.Length - 13);
        string todayYear = container1.Substring(0,4);
        int convTodayYear = int.Parse(todayYear);
        //-------------------------------------------------------------
        int yearsNow = convTodayYear - convYear;
        Console.WriteLine("You're {0} years old.",yearsNow);
        int yearsAfter = yearsNow + 10;
        Console.WriteLine("After ten years you will be {0} years old.",yearsAfter);

    }
}